Multi-gear torquer

ABSTRACT

Disclosed is a multi-gear torquer with end covers on both sides of the casing. An input shaft and an output shaft are respectively arranged at the center of the two end covers. A sun gear is fixed on the input shaft and moves along a planet gear engaged in the transmission mechanism. The planet gear meshes with a gear ring and moves around the sun gear, then the planet gear drives the turntable centrally fixed with the output shaft connected to the load end. The multi-gear torquer disclosed herein has the following advantages: large output torque and high mechanical efficiency, and it can be used as power transmission equipment for a car or a train and used as other mechanical transmission equipment.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Patent ApplicationNo. PCT/CN2017/085833, filed on May 25, 2017, which claims the benefitof priority from Chinese Application No. 201610379491.4, filed on May27, 2016. The entire contents of the aforementioned applications,including any intervening amendments thereto, are incorporated herein byreference.

TECHNICAL FIELD

The invention relates to the machinery field, and more particularly to amulti-gear torquer.

BACKGROUND

A variety of power train technologies are well-known, and the gear trainespecially has a good transmission effect. The gear train has beenwidely used in power train for its high transmission efficiency, butsome power train technologies with energy-saving and more efficienttransmission technologies are still being explored.

SUMMARY

Provided is a multi-gear torquer with end covers provided on both sidesof the casing. An input shaft and an output shaft are respectivelyprovided at the centers of the two end covers. A sun gear meshes with aplanet gear of the transmission mechanism is fixed on the input shaft.The sun gear moves along the planet gear engaged therewith. The planetgear moves along a ring gear engaged therewith. The planet gear movesaround the sun gear, and drives a turntable at which the output shaftconnected to the load end is fixed. Thus Power transmission is realized.

The multi-gear torquer includes a casing, a first end cover, a secondend cover, an input shaft, a sun gear, a transmission mechanism, an ringgear and an output shaft. The casing is fixed on the base, the casing isprovided with an oil inlet hole and an oil outlet hole, with lubricatingoil disposed at the bottom. The first end cover and the second end coverare set on both sides of the casing, and the input shaft and the outputshaft are respectively disposed at the center of the first end cover andthe second end cover, the input shaft is fixed with a sun gear movingalong the planet gear engaged therewith in the transmission mechanism,the planet gear moves along the ring gear engaged therewith, the planetgear moves around the sun gear and drives the turntable, the center theturntable is fixed with the output shaft connected to the load end.

Two ring gears are integrated with the inner wall of the casing, and thetransmission mechanism includes at least three gears, at least one axle,a wheel disc, a turntable component. The at least three gears arefixedly contacted to form at least one “

” character shaped planet gear. The “

” in the axial direction of the “

” character shaped planet gear is an axle. A first gear is provided inthe middle of the planet gear in a longitudinal direction and two secondgears are arranged on both sides of the “

” character shaped planet gear in parallel to mesh with two ring gears.The first gear meshes with the sun gear. The diameter of the sun gear islarger than that of the first gear. The planet gear is slidablycontacted with the axle, one end of the axle is fixed to the wheel disc,and the other end is fixed to the turntable. The output shaft connectedto the load end is fixed at the center of the turntable.

Further, the second gear is conical, the angle between the conical facesof the two second gears is less than 180 degrees but greater than 0degrees. The planet gear is provided with a bearing interiorly slidablyconnected to the axle.

Alternatively, a multi-gear torquer includes a casing, a first endcover, a second end cover, an input shaft, a sun gear, a transmissionmechanism, a bevel gear ring, an output shaft. The casing is fixed onthe base. The casing is provided with an oil inlet hole and an oiloutlet hole, with lubricating oil disposed at the bottom. The first endcover and the second end cover are disposed on both sides of the casing.The input shaft and the output shaft are respectively disposed at thecenter of the first end cover and the second end cover. The input shaftis fixed with a sun gear moving along the planet gear engaged therewithin the transmission mechanism, the planet gear moves along the ring gearengaged, the planet gear moves around the sun gear and drives theturntable at which center the output shaft connected to the load end isfixed.

The first end cover of the casing is fixed with a bevel gear ring toform a cone disc provided with the input shaft at the center thereof.The second end cover is provided with the output shaft at the center.The transmission mechanism includes at least one first bevel gear, onesecond bevel gear, at least one axle, at least two supports, one wheeldisc, at least one rod, one turntable component. At least one firstbevel gear and a second bevel gear are fixedly connected to both sidesof at least one axle, defining at least one I-shaped planet gear. Eachof the first bevel gears at one end is engaged with the bevel gear ring,the diameter of the first bevel gear is larger than that of the centerbevel gear. Each of the second bevel gear at the other end is engagedwith the center bevel gear, the diameter of the center bevel gear islarger than that of the second bevel gear. Each axle is slidablyconnected to two supports fixed to the turntable. One end of each rod isslidably connected to the axle at the end of the first bevel gear, theother end is fixed on the turntable, the center of the turntable isfixed to the output shaft connected to the load end.

Yet alternatively, a multi-gear torquer includes a casing, a first endcover, a second end cover, an input shaft, a sun gear, a transmissionmechanism, a bevel gear ring and an output shaft. The casing is fixed onthe base and is provided with an oil inlet hole and an oil outlet hole,with lubricating oil disposed at the bottom. The first end cover and thesecond end cover are disposed on both sides of the casing, and thecenters of the first end cover and the second end cover are respectivelyprovided with the input shaft and the output shaft. The input shaft isfixed with a sun gear moving along the planet gear engaged therewith inthe transmission mechanism. The planet gear moves along the bevel gearring engaged therewith, the planet gear moves around the sun gear anddrives the turntable, the center of the turntable is fixed with theoutput shaft connected to the load end.

The first end cover of the casing is fixed with the first bevel gearring and the second bevel gear ring to form a cone disc provided with aninput shaft at the centre thereof. The center of the second end cover isprovided with the output shaft, the transmission mechanism includes atleast one first bevel gear 218, a second bevel gear 208 a and a thirdbevel gear 208 b, at least one axle, at least two supports, one wheeldisc, at least a rod and a turntable component. The at least one firstbevel gear, the second bevel gear and the third bevel gear are fixed toboth sides of at least one axel to define at least one “

” shaped planet gear. The planet gear is provided with a first bevelgear at one end, the first bevel gear meshes with the sun gear. Thediameter of the center bevel gear is larger than that of the first bevelgear. The other end of the planet gear is provided with a second bevelgear and a third bevel gear that respectively mesh with two bevel gearrings. The diameters of the second bevel gear and the third bevel gearare larger than that of the center bevel gear. Each axle is slidablyconnected to at least two supports fixed to the turntable. One end ofeach rod is slidably connected to the axle between the second bevel gearand the third bevel gear. The other end of each rod is fixed on theturntable and the centre of the turntable is fixed with the output shaftconnected to the load end.

Further, a bearing is provided at the position where the axle isslidably connected to the rod.

According to the multi-gear torquer described in the disclosure, throughthe planet gears with different structures in the transmission mechanismand their different position layouts, during the movement of the planetgear driven by the planet gear, the resistance force in the transmissionis resolved. A small torque is applied to the sun gear, therebygenerating a large torque on the turntable. Although the rotation speedof the output shaft in the transmission is reduced, a large outputtorque is realized, such that the multi-gear torquer gets highmechanical efficiency and can be used as a power transmission device forautomobiles, trains and other mechanical transmission equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of the multi-gear torquer according to afirst embodiment of the present invention;

FIG. 2 is a schematic view of the multi-gear torquer according to asecond embodiment of the present invention;

FIG. 3 is a schematic view of the multi-gear torquer according to athird embodiment of the present invention

DETAILED DESCRIPTION OF EMBODIMENTS

Several embodiments of the invention are described in conjunction withthe accompanying drawings. The description is for illustration purposeand not limited thereto, and features described in embodiments can becombined with each other.

Embodiment 1

FIG. 1 is a schematic view of a multi-gear torquer according to thefirst embodiment of the present invention. As shown in FIG. 1, themulti-gear torquer includes a casing 101, a first end cover 110, asecond end cover 118, an input shaft 108, a sun gear 107, a geartransmission mechanism 122 and an output shaft 119. The casing 101 isfixed on the base 114 and is provided with an oil inlet hole 103 and anoil outlet hole 113 thereon, with lubricating oil 121 at the bottom. Thefirst end cover 110 and the second end cover 118 are set on both sidesof the casing 101, with the first end cover 110 centrally provided withthe input shaft 108 and the second end cover 118 centrally provided withthe output shaft 119. An input wheel 109 is fixed on the input shaft108. An output wheel 120 is fixed on the output shaft 119. Two ringgears 104 on the inner wall of the casing 101 are integrated with thecasing 101. The transmission mechanism is provided with two first gears102, four second gears 106, two axles 105, two bearings 111, a wheeldisc 115, a turntable component 117. Four second gears 106 and two firstgears 102 are fixedly connected to form two planet gears 100 in theshape of “

”, the “

” in the axial direction of the “

” shaped planet gear is an axle 105. A first gear 102 is longitudinallyset in the middle of “

”, two second gears are provided on both sides of the “

” shaped planet gear, which are conical with the angle between theconical surfaces of the two second gears 106 is less than 180 degreesbut greater than 0 degrees. The two second gears 106 are arranged inparallel and mesh with two ring gears 104. A first gear 102 meshes withthe sun gear 107, the diameter of the sun gear 107 is larger than thatof the first gear 102. Two planet gears 100 are inwardly provided withtwo bearings 111 slidably connected to two axles 105. One end of theaxle 105 is fixed with the wheel disc 115, the other end of the axle 105is fixed to the turntable 117 centrally fixed with the output shaft 119connected to the load end, then power transmission is realized.

During the movement, the resistance of the turntable 117 is applied tothe axle 105, and is applied to the planet gear through the axle 105.Two gears 106 in each of the “

” shaped planet gears mesh with two ring gears 104. The resistance ofthe turntable 117 is dissolved when the two second gears 106 mesh withthe two ring gears 104. The turntable 117 applies force to the axle 105,and the axle 105 applies force to the planet gear, the driving wheeldisc, or the sun gear 107, applies force to the gear 102. Thus, therotations of input shaft 108, the sun gear 107 and the first gear 102move to drive the planet gear 100, then the planet gear 100 moves todrive the turntable 117, generating a large torque on the turntable 117,such that the turntable 117 drives the output shaft 119. Obviously, themulti-gear torquer described herein has strong anti-overload capability.The transmission efficiency is very high.

Embodiment 2

FIG. 2 is a schematic view of a multi-gear torquer according to thesecond embodiment of the present invention. As shown in FIG. 2, themulti-gear torquer includes a casing 201, a first end cover 213, asecond end cover 220, an input shaft 210, a sun gear 223, a geartransmission mechanism 226 and an output shaft 221. Base 215 is fixed onthe casing 201. The casing 201 is provided with an oil inlet hole 202and an oil outlet hole 214 thereon, with lubricating oil 206 provided atthe bottom. The first end cover 213 and the second end cover 220 on bothsides is provided on the casing 201. A bevel gear ring 207 is fixed onthe first end cover 213 to form a integrated structure that defines acone disc 200 used as the first end cover 213. The input shaft 210 isset at the center of the cone disc 200, the output shaft 221 is set atthe center of the second end cover 220. An input wheel 209 is fixed onthe input shaft 210, an output wheel 222 is fixed on the output shaft221. The input shaft 210 is slidably connected and passes through theend cover 213. A conical sun gear 223 meshed with the gear transmissionmechanism 226 is fixed to the input shaft 210. The gear transmissionmechanism 226 includes two first bevel gears 208, two second bevel gears218, two axles 217, four supports 212, a wheel disc 211, two rods 216, aturntable component 219. Two first bevel gears 208 and two second bevelgears 218 are fixed to two ends of the two axles 217 to form two “I”shaped planet gears 224. Each of the first bevel gears 208 meshes withthe bevel gear ring 207. The diameter of the first bevel gear 208 islarger than that of the sun gear 223. Each of the second bevel gears 218is engaged with the sun gear 223. The diameter of the sun gear 223 islarger than that of the bevel gears 218. Each axle 217 is slidablyconnected to two supports 212, each of the supports 212 is fixed to thewheel disc 211. One end of each of the rods 216 is slidably connected tothe axle 217 at the end of the first bevel gear 208. The axle 217 isslidably connected to the connecting rod 216 by a bearing, the other endof the rod 216 is fixed on the turntable 219 centrally fixed with theoutput shaft 221 connected to the load end, then power transmission isrealized.

Compared with the first embodiment, the second embodiment has a greatchange. The planet gear is changed from the “

” shape of the first embodiment to the “I” shape of the secondembodiment. The ring gear 104 of the first embodiment is changed intothe cone disc 200 of the second embodiment that the cone disc 200 isused as an end cover. The structure and the shape of the components inthe second embodiment are obviously different from those of the firstembodiment. Seemingly, they are different models, however, aftercarefully analyzed, the working principle of the second embodiment isthe same as that of the first embodiment, that is, the resolution offorce in the transmission is also implemented by the gear transmissionmechanism. During the movement, the resistance of the turntable 219 isapplied to the rod 216. The rod 216 applies the force to one end of theaxle 217, close to the first bevel gear 208. The first bevel gear 208 isengaged with the bevel gear ring 207 as a fulcrum, such that the arm offorce is small, and the resistance torque is small. The driving wheel,or the sun gear 223, meshes with the second bevel gear 218 to apply onthe other end of the axle 217. The first bevel gear 208 of the axle 217meshes with the bevel gear ring 207 as a fulcrum. The active force armis big and the torque is large. Thus, the motion resistance on the axle217 is resolved. The rotations of the input shaft 210 and the sun gear223 are engaged with the movement of the second gear 218, the sun gear223 applies a relatively small force to drive the planet gear 224 andthe axle 217, and then drive the turntable 219 by the rod 216 togenerate a large torque on the turntable 219, the turntable 219 drivesthe output shaft 221. Obviously, the multi-gear torquer described hereinhas strong anti-overload capability. The transmission efficiency is veryhigh.

Embodiment 3

FIG. 3 is a schematic view of a three-wheel torquer according to a thirdembodiment of the present invention. As shown in FIG. 3, the multi-geartorquer includes a casing 201, a first end cover 213, a second end cover220, an input shaft 210, a sun gear 223, a gear transmission mechanism227 and an output shaft 221, wherein, a base 215 is fixed on the casing201 provided thereon with an oil inlet hole 202 and an oil outlet hole214 with lubricating oil 206 at the bottom. The first end cover 213 andthe second end cover 220 are set on two sides of the casing 201. Thefirst end cover 213 is fixed with a first bevel gear ring 207 a and thesecond bevel gear ring 207 b to form an integrated structure, further todefine a cone disc 300 used as the first end cover 213. The center ofthe cone disc 300 is provided with the input shaft 210. The center ofthe second end cover 220 is provided with the output shaft 221. An inputwheel 209 is fixed on the input shaft 210, and an output wheel 222 isfixed on the output shaft 221. The input shaft 210 is slidably connectedand passes through the first end cover 213. The input shaft 210 is fixedwith a conical sun gear 223 meshing with the gear transmission mechanism227. The gear transmission mechanism 227 includes two first bevel gears218, two bevel gears 208 a, two third bevel gears 208 b, two axles 217,four supports 212, one turntable 211, two rods 216 and a turntable 219.The two first bevel gears 218 , the two second bevel gears 208 a and thetwo third bevel gears 208 b are fixed to the two ends of the two axles217 to form two “

” shaped planet gear 225, each of the “

” shaped planet gear 225 is provided with a first bevel gear 218 at oneend and a second bevel gear 208 a and a third bevel gear 208 b at theother end. Each of the axles 227 is slidably coupled to two supports 212fixed to the wheel disc 211. Each of the first bevel gears 218 isengaged with the sun gear 223, the diameter of the sun gear 223 islarger than that of the first bevel gear 218. The second bevel gear 208a and the third bevel gear 208 b are engaged with the two first ringgears 207 a and the second ring gears 207 b, the diameters of the secondbevel gears 208 a and the third bevel gears 208 b are larger than thatof the sun gear 223. One end of each of the rods 216 is slidablyconnected to the axle 217 between the second bevel gear 208 a and thethird bevel gear 208 b, the other end is fixed to the turntable 219centrally fixed with the output shaft 221 connected to the load end,then power transmission is realized.

The structure of the third embodiment is a bit different from thestructure of the second embodiment. On the basis of the secondembodiment, a second ring gear 207 b and a big third bevel gear 208 bare added, thus changing the “I” shaped planet gear 224 in the secondembodiment to the “

” shaped planet gear 225 in the third embodiment. That one end of therod 216 is slidably connected to the axle 217 at the end of the firstbevel gear 208 in the second embodiment is changed to that one end ofthe rod 216 is slidably connected to the axle 217 between the secondbevel gear 208 a and the third bevel gear 208 b in the third embodiment,so that the multi-gear torquer of the third embodiment rotates smoothly,and is suitable for a large multi-gear torquer. But the workingprinciple and the basic features are also the same as that in the aboveembodiment, that is, the force in the transmission is also resolved bythe gear transmission mechanism.

During the movement, the resistance of the turntable 219 is applies tothe rod 216, then the connecting rod 216 acts on one end of the axle 217slidably connected between the second bevel gear 208 a and the thirdbevel gear 208 b. The second bevel gear 208 a and the third bevel gear208 b are engaged with the first bevel gear ring gear 207 a and thesecond bevel gear ring gear 207 b as fulcrums, the resistance arm issmall, generating a smaller resistance torque. The driving wheel, or thesun gear 223, is engaged with the first bevel gear 218 acting on theother end of the axle 217. The second bevel gear 208 a and the thirdbevel gear 208 b on the same axle 217 is engaged with the first bevelgear ring 207 a and the second bevel gear ring 207 b as fulcrums, theactive force arm formed is big with the torque is large, such that themotion resistance on the axle 217 is dissolved. The rotations of theinput shaft 210 and the sun gear 223 are engaged with the movement ofthe first bevel gear 218, the sun gear 223 applies a relatively smallforce to drive the “

” shaped planet gear 225 and the axle 217, then the turntable 219 isdriven by the rod 216 that a large torque is generated on the turntable219 to drive the output shaft 221. Obviously, the multi-gear torquerdescribed herein has strong anti-overload capability. The transmissionefficiency is very high.

It should be noted that the above embodiments are for illustrationpurpose and are not limited thereto. The technical solutions describedin the embodiments may be modified, or some or all of the technicalfeatures may be equivalently replaced without departing from the scopeof present disclosure.

What is claimed is:
 1. A multi-gear torquer, comprising: a casing, afirst end cover, a second end cover, an input shaft, a sun gear, atransmission mechanism, a plurality of ring gears, and an output shaft;wherein the casing is fixed on a base and is provided with an oil inlethole and an oil outlet hole, with lubricating oil provided at a lowerpart; the first end cover and the second end cover are provided on bothsides of the casing; the input shaft and the output shaft arerespectively provided at the center of the first end cover and thesecond end cover; the sun gear is fixed on the input shaft and mesheswith the planet gear of the transmission mechanism; the planet gearmeshes with the ring gear and moves around the sun gear to drive theturntable to move; the output shaft is centrally fixed on the turntableand is connected to a load end; and two ring gears are integrated withan inner wall of the casing; the transmission mechanism comprises atleast three gears, at least one axle, a wheel disc and a turntablecomponent; the at least three gears are in fixed contact to define atleast one “

” character shaped planet gear; the axle is set in the axial directionof the “

” character shaped planet gear; a first gear is provided in thelongitudinal direction of the planet gear; two second gears are providedon both sides of the planet gear, both of two second gears are arrangedin parallel to engage with the two ring gears; the first gear mesheswith the sun gear; a diameter of the sun gear is larger than that of thefirst gear; the planet gear slidably contacts with the axle; one end ofthe axle is fixed to the wheel disc, and the other end is fixed to theturntable centrally fixed with the output shaft connected to the loadend.
 2. The multi-gear torquer of claim 1, wherein the second gear isconical; an angle between conical interfaces of the two second gears isless than 180 degrees and greater than 0 degrees; and the planet gear isinteriorly provided with a bearing slidably connected to the axle.
 3. Amulti-gear torquer, comprising: a casing, a first end cover, a secondend cover, an input shaft, a sun gear, a transmission mechanism, a bevelgear ring, and an output shaft; wherein the casing is fixed on a baseand is provided with an oil inlet hole and an oil outlet hole, withlubricating oil provided at a lower part; the first end cover and thesecond end cover are provided on both sides of the casing; the inputshaft and the output shaft are provided at the center of the first endcover and the second end cover respectively; the input shaft and theoutput shaft are respectively provided at centers of the first end coverand the second end cover; the sun gear is fixed on the input shaft andmeshes with the planet gear of the transmission mechanism; the planetgear meshes with the ring gear and moves around the sun gear to drivethe turntable to move; the output shaft is centrally fixed on theturntable and is connected to a load end; and the first end cover isfixed with a bevel gear ring to define a cone disc centrally providedwith the input shaft; the second end cover is centrally provided withthe output shaft; the transmission mechanism comprises at least onefirst bevel gear, a second bevel gear, at least one axle, at least twosupports, a wheel disc, at least one rod and a turntable component; theat least one first bevel gear and the second bevel gear are fixed to twoends of the at least one axle to define at least one I-shaped planetgear; each of the first bevel gears at one end meshes with the bevelgear ring; wherein the diameter of the first bevel gear is larger thanthat of the center bevel gear; each of the second bevel gears is engagedwith the center bevel gear at the other end, wherein the diameter of thecenter bevel gear is larger than that of the second bevel gear; eachaxle is slidably connected to the two supports fixed to the wheel disc;one end of each rod is slidably connected to the axle at the end of thefirst bevel gear; the other end of the rod is fixed on the turntablecentrally fixed with the output shaft connected to a load end.
 4. Themulti-gear torquer according to claim 3, wherein a bearing is providedat the position where the axle is slidably connected with the rod.
 5. Amulti-gear torquer, comprising: a casing, a first end cover, a secondend cover, an input shaft, a sun gear, a transmission mechanism, a bevelgear ring, and an output shaft; wherein the casing is fixed on a baseand is provided with an oil inlet hole and an oil outlet hole, withlubricating oil provided at a lower part; the first end cover and thesecond end cover are provided on both sides of the casing; the inputshaft and the output shaft are provided at the center of the first endcover and the second end cover respectively; the input shaft and theoutput shaft are respectively provided at centers of the first end coverand the second end cover; the sun gear is fixed on the input shaft andmeshes with the planet gear of the transmission mechanism; the planetgear meshes with the ring gear and moves around the sun gear to drivethe turntable to move; the output shaft is centrally fixed on theturntable and is connected to a load end; and the first end cover isfixed with a first bevel gear ring and a second bevel gear ring todefine a cone disc centrally provided with the input shaft; the outputshaft is provided at the center of the second end cover; thetransmission mechanism comprises at least one first bevel gear, a secondbevel gear, a third bevel gear, at least one axle, at least twosupports, a wheel disc, at least one rod and a turntable component; theat least one first bevel gear, the second bevel gear and the third bevelgear are fixed to two ends of the at least one axle to define at leastone “

” character shaped planet gear; the first bevel gear is provided at oneend of the planet gear and meshes with the sun gear; a diameter of thecenter bevel gear is larger than that of the first bevel gear; a secondbevel gear and a third bevel gear are provided at the other end of theplanet gear and respectively mesh with two bevel gear rings; diametersof the second bevel gear and the third bevel gear are larger than thatof the center bevel gear; each axle is slidably connected to at leasttwo supports fixed to the wheel disc; one end of each rod is slidablyconnected to the axle between the second bevel gear and the third bevelgear, with the other end fixed on the turntable centrally fixed with theoutput shaft connected to a load end.
 6. The multi-gear torqueraccording to claim 5, wherein a bearing is provided at the positionwhere the axle is slidably connected to the rod.